<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style media="screen">
        .liked{
            background: deeppink;
        }
    </style>
</head>
<body>
    <div id="app">
        <input v-model="price">
        {{price | currency("USD")}}
    </div>
    <script src="https://cdn.bootcss.com/vue/2.4.2/vue.min.js"></script>
    <script src="main.js"></script>
</body>
</html>
